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/*
* Copyright (C) 2013 Sascha Hauer <s.hauer@pengutronix.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include <common.h>
#include <driver.h>
#include <init.h>
#include <malloc.h>
#include <of.h>
#include <state.h>
#include <linux/err.h>
static int state_probe(struct device_d *dev)
{
struct device_node *np = dev->device_node;
struct state *state;
const char *alias;
const char *backend_type = NULL;
int ret;
char *path;
if (!np)
return -EINVAL;
alias = of_alias_get(np);
if (!alias)
alias = "state";
state = state_new_from_node(alias, np);
if (IS_ERR(state))
return PTR_ERR(state);
ret = of_find_path(np, "backend", &path, 0);
if (ret)
return ret;
dev_info(dev, "outpath: %s\n", path);
ret = of_property_read_string(np, "backend-type", &backend_type);
if (ret)
return ret;
else if (!strcmp(backend_type, "raw"))
ret = state_backend_raw_file(state, path, 0, 0);
else if (!strcmp(backend_type, "dtb"))
ret = state_backend_dtb_file(state, path);
else
dev_warn(dev, "invalid backend type: %s\n", backend_type);
if (ret)
return ret;
state_load(state);
return 0;
}
static __maybe_unused struct of_device_id state_ids[] = {
{
.compatible = "barebox,state",
}, {
/* sentinel */
}
};
static struct driver_d state_driver = {
.name = "state",
.probe = state_probe,
.of_compatible = DRV_OF_COMPAT(state_ids),
};
device_platform_driver(state_driver);
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